Swansboro, NC Radon Levels

Q: What EPA Radon Zone is Swansboro in?

Swansboro is in Onslow County, EPA Zone 3.

Q: What EPA radon zones surround Swansboro, NC?

Swansboro sits in Onslow County, which the EPA classifies as Radon Zone 3. Among the nearby communities listed above, 8 in Zone 3 (low risk, under 2 pCi/L). EPA radon zones are county-level predictions of radon potential, so the EPA recommends testing every individual home regardless of its zone, since levels vary from house to house.

Q: How much does radon mitigation cost in Swansboro?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Check local Swansboro radon levels and find certified testing and mitigation professionals to keep your home safe

Swansboro, NC Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)

County Onslow County, NC

Zip Code 28584

Situated in Onslow County within the Jacksonville Metro area, Swansboro lies along North Carolina's Crystal Coast on sandy coastal plain deposits. The historic waterfront town features homes adapted to coastal living, typically with elevated or slab foundations to accommodate flood zones. Radon testing information for zip code 28584 is currently limited, though coastal geology typically presents lower radon risk that individual testing can confirm.

Swansboro, NC Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

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EPA Radon Zones Near Swansboro, NC

No user-submitted radon readings are available for Swansboro or its immediate area yet. The table below shows the EPA radon zone — a county-level prediction of radon risk — for nearby communities. Radon still varies from home to home, so testing is the only way to confirm your level.

City	Distance	County	EPA Radon Zone
Newport	13.5 mi	Carteret County	Zone 3
Jacksonville	16.7 mi	Onslow County	Zone 3
Sneads Ferry	18.7 mi	Onslow County	Zone 3
Cherry Point	19.4 mi	Craven County	Zone 3
Havelock	19.5 mi	Craven County	Zone 3
Morehead City	21.8 mi	Carteret County	Zone 3
Atlantic Beach	22.4 mi	Carteret County	Zone 3
Pollocksville	22.5 mi	Jones County	Zone 3

Onslow County Radon Profile

The EPA maps Onslow County as Radon Zone 3, the lowest predicted classification, with modeled indoor screening levels under 2 pCi/L. Direct test data for Onslow County remains limited, so the closest neighboring readings are used here to represent the radon conditions homeowners are likely to encounter. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Onslow County home regardless of zone or a neighbor's results.

Radon FAQ for Swansboro, NC

What EPA Radon Zone is Swansboro in?

Swansboro and the 28584 zip code are in Onslow County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

What EPA radon zones surround Swansboro, NC?

Swansboro sits in Onslow County, which the EPA classifies as Radon Zone 3. Among the nearby communities listed above, 8 in Zone 3 (low risk, under 2 pCi/L). EPA radon zones are county-level predictions of radon potential, so the EPA recommends testing every individual home regardless of its zone, since levels vary from house to house.

How much does radon mitigation cost in Swansboro?

Radon mitigation in Swansboro typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Swansboro?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.